AIRBORNE PARTICLE MOVEMENT IN A GENERIC INDOOR SPACE

The video clip below shows the results of computer modeling of a classroom type space to demonstrate movement of micron-sized particles carried on room air currents. These particles could be biologically or chemically harmful and represent a health hazard via direct contact and inhalation. This model demonstrate that the conventional top-down mixing ventilation system common in the US promotes the dispersion of particles in indoor spaces. New ventilation methods are needed to purge indoor spaces of these harmful particles.

 

**************

Classroom Main Sequence with air inlet at a 20-deg down angle. 6-min of exhalation +6-min purge when view angle changes [real time].

 

 

AIRBOURNE PARTICLE MOVEMENT IN A QUIESCENT ROOM

Video clip of mannequin discharge into a quiescent room (mechanical ventilation off). Restful breathing rate. Discharge of 3-micron (Blue) and 50-micron (Red) particles normal to inlet on head. First half is with discharge; second half is without to demonstrate continued movement of particles due to thermal currents in room (discharge at 92degF with mannequin surfaces are at 85degF). Real time about 18-min.